I came here to ask the million dollar question, they answered it on their GitHub.

How we are differnt from Librewolf? Umbra uses the built in firefox password manager instead of recommending extensions. Netflix works, and we do not enable RFP ( resist fingerprinting ) by default as it breaks many web pages. We also have an Umbra Control Center ( about:umbra or bottom left in setting menu) that allows you to set many privacy settings and set profiles for individual web sites. ( may be more differences just the top of my head)

Cool project. Will it support existing extension?

Very cool indeed. Librewolf user and love it, but always need good options because you never know the future.

Definitely be checking this one out. Cheers!

Congratulations!

Tradeoff question—

Should I expect to find some semblance of safety in sticking with the largest open source browser project I can find, given perhaps the eyeballs etc., or would you reckon not (or even perhaps the opposite, security through obscurity & Umbra is “safer” than Firefox)?

Maybe this is so “lightly” forked it’s “just” stripping + cosmetics & the risk profile is essentially identical?

Good project, all the best to you!

Interesting, I'll check it out. I see the flapak release, will you make it available from flathub?